Wednesday, 28 March 2018

Konse difference ha petrol and diesel engine me

konse difference ha petrol and diesel engine me



Hello friend aj ham janege petrol or diesel engine me kya difference ha. yani petrol or diesel engine me kya kya difference ha. so petrol engine ko ham SI engine kehte ha or diesel engine ko ham CI engine kehte ha. SI engine ka matlab ha spark ignition eska matlab petrol engine me power stroke ke time pe power produce hota ha. air fuel mixture jalane ke liya electric spark ki jarurat hoti ha. vo spark produce hone ke liya spark plug use karte ha. or vo spark 20,000V (DC) power pe produce hota ha. or diesel engine ko ham CI engine matlab compress ignation bhi kehte ha. eska matlab air +fuel mixture ko burn karne ke liya power stroke ke time per jis external factore ko use Kiya jata ha use compression kehte ha. jab piston TDC to BDC piston travel hota ha us samai compression se jo temperature or pressure generate hota ha vo sahi hona chahiya  tabhi air + fuel mixture sahi se jalta ha.


second jo main difference ha ki petrol engine ke under suction ke time per TDC to BDC piston travel karta ha or intake valve open hota ha us samai mixture under ata ha or vo air+fuel ka mixture carburetor provide karta ha. Lekin diesel engine me jab engine ka intake valve open rahega tab piston TDC to BDC travel karega keval air cylinder ke under inter karega.
Petrol engine me petrol ka estamal karte ha. petrol ka  jo auto- ignition temperature rehta ha yani vo temperature jispe petrol burn hota ha ya diesel engine ke mukable jada rehta ha. diesle engine ka auto-ignition temperature kam rehta ha. petrol volatile bhi ha yani uske bond break rehta ha agar ap use rakege to uski quantity cum hogi. per diesel me yasa nahi ha diesel ke bond nahi break hata. as ki quantity vahi rehagi kithe bhi der ke liya rakhe.

petrol engine ka compression ratio kam rehte ha. 10:1 or diesel engine me compression ratio jada rehta ha. 22:1

petrol engine me noise kam rehta ha or diesel engine me noise jada rehta ha. kuki petrol engine me air +fuel pehle se hi under ate rehta ha vo mix ho jata ha. use homogenious mixture kehte ha. uske under jo combuston hota ha power stroke ke doran vo smooth hota ha. per diesel engine me aisa nahi ha compression ke time per sirf air hi compress hoti ha or jab compression stroke complite hota or power stroke chalu hota ha tabhi ingector vo fuel ko inject karta ha us time pe diesel ko air ke sath mix bhi hona ha or uske under aaag bhi lagni rehni ha. vo mixture acha nhi rehta ha. vo hetrogious mixture kehte ha.



Diesel engine me fuel injector ko fuel jo provide karvata ha vo high pressure pump se karte ha. or fuel injector pump ka pressure 100- 1600 bar tak rehta ha. or petrol engine me kisi kisi engine me fuel pump use kiya jata ha. 

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